Air release valve



FIG. 1 is a front view of an air release valve showing my design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is an isometric side view thereof.

The broken lines shown in the drawings are directed to environment andform no part of the claimed design.

CLAIM The ornamental design for an air release valve, as shown anddescribed.